Improvement in shearing-dies for carriage-wheel boxes



. H. HAMMOND. Shearing Dies for Carriage W heel Boxes. N0 161,95Patented A.p,ri|13,l 875.

@wmww gfi THE GRAPH I G COJNOTO .-l lTH.39 8:41 PARK PLACE, NY.

Unrrnn S'ra'rns Parnn'r @rrron HENRY HAMMOND, OF HARTFORD, CONNECTICUT.

IMPROVEMENT IN SHEARlNG-DIES FOR CARRIAGE-WHEEL BOXES.

Specification forming part of Letters Patent No. 161,956, dated April13, 1875; application filed September 21, 1874.

To all whom it may concern Be it known that I, HENRY HAMMOND, ofHartford, in the county of Hartford. and State of Connecticut, haveinvented certain new and useful Improvements in Shearing Dies forCarriage-Wheel Boxes; and I do hereby declare that the following is afull, clear, and exact description thereof, whereby a person skilled inthe art can make and use the same, reference being bad to theaccompanying drawings and to the letters of reference marked thereon.

Like letters in the figures indicate the same parts.

When wrought-iron carriage-wheel boxes are struck in dies to give themthe desired form, a thick web or flange is left around the edge wherethe two parts of the die meet. The object of my invention is to shear onthis web where it is not needed, so as to leave the outside of the boxround and smooth, and to cut out and leave a portion of it to form theprojections which enter the wood of the hub and provent the box fromturning within it.

My invention consists in the construction and arrangement of the partsof the dies necessary to effect the above-described objects.

In the accompanying drawing, Figure l is a top view of the lower die.Fig. 2 is a botbox.

. B, which holds them in position, and upon which they can be adjusted.The upper die, C, has upon its lower side a recess, a, of a form exactlyfitting the wheel'box to be sheared or trimmed. This recess fits like asaddle over the wheel-box, and presses it downward through the openingin the lower die, between the cutting-edges a a. The lower portion ofthis die is of a form that will just pass through the space between theedges a a of the lower die, so as to form with them a shears or punchfor separating the metal.

The wheel-box which is to be trimmed is placed upon the lower die withthe projecting web resting upon the top of the plates A A, along theedges a a. The top die is then pressed downward by any suitablemachinery usually applied to presses, and the metal is sheared off onthe lines a a.

The lines a a do not follow exactly the contour of the circular portionof the wheel-box, but at the points marked d d (Fig. 2) certain parts ofthe web are out around, leaving them attached to the central portion.These are for the purpose of holding the box from turning in the hub,and are out out of the projecting web as the box is forced through thedies;

WVhat I claim as my invention is Theherein-described dies for shearingwheelboxes and forming the projections 01, substaib tially as specified.

HENRY HAMMOND.

Witnesses:

THEO. G. ELLIs, WENDELL R. CURTIS.

